The add assistance parameters tool automatically generates some project parameters. If you want to remove these parameter in later stage, you can do so as explained here.
You can view these parameters via following window in Revit :

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Mark a Revit element as an endunit

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This allows to define the application on the piping system.

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Project parameters

As explained above, the Hysopt BIM Syncer automatically generates some project parameters. You can view these parameters via following window in Revit :

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If you want to remove these parameter in later stage, you can do so as explained here